Hoisting arrangement especially for rollers

ABSTRACT

A hoisting arrangement for rollers, which comprises at least one lever for each end face of the roller to be hoisted, which lever has one end provided with an eye or fork for connection to a cable, hook or bar of a crane while its other end carries a bolt having its axis arranged substantially perpendicularly to the direction of the longitudinal extension of the lever and being adapted to pivotally engage a bore in the respective end face of the lever, pin means being provided on each of said levers at an area between said lever ends for engagement with and resting the respective lever against the respective end face of the roller to be hoisted.

United States Patent Junk et al. Nov. 18, 1975 [541 HOISTING ARRANGEMENT ESPECIALLY 2,427,104 9/1947 Hosler 294/15 O ROLLERS 2,542,289 2/1951 Robbins... 294/92 X 2,764,447 9/1956 Schmldt 294/92 Inventors! Dieter J utt n; 3,363,927 1/1968 Wesemann 294/16 Jiirgen Schlunke; Siegfried Reich, both of Krefeld, all of Germany Primary Examiner-Richard A. Schacher [73] Asslgnee h z g a sgzfi f figg Assistant Examiner-Johnny D. Cherry H g, Krefeld, Germany Attorney, Agent, or F1rmWalter Becker [22] Filed: July 11, 1973 [21] Appl. No.: 378,346 [57] ABSTRACT f l Apphcanon Data A hoisting arrangement for rollers, which comprises at [63] commuanonm'pan of 188310 least one leverv for each end face of the roller to be 1971' abandoned hoisted, which lever has one end provided with an eye or fork for connection to a cable, hook or bar of a [30] Forelgn Apphcaton Pnonty Data crane while its other end carries a bolt having its axis OCI. l0, 1970 Germany 7037499[U] arranged ubstantially perpendicularly to the direction of the longitudinal extension of the lever and being U-S. adapted to piyotally engage a bore in the respective [51] Int. Cl. B66c 1/22 end f f the lever, pin means being provided on Fleld of Search 294/15 16, 67 R, 90, each of said levers at an area between said lever ends 294/92, 82 R; 74/144, 156, 1 for engagement with and resting the respective lever against the respective end face of the roller to be [56] References Cited hoisted.

UNITED STATES PATENTS 1,401,046 12/1921 Clymer 294/15 4 Claims, 3 Drawing Figures I-IOISTING ARRANGEMENT ESPECIALLY FOR ROLLERS This is a continuation-in-part of co-pending application Ser. No. 188,310 Junk et al. filed Oct. 12, 1971 (Monday, Oct. 11, 1971 was Columbus Day), now abandoned.

The present invention relates to hoisting means for rollers. For transporting rollers, it is customary to loop ropes, cables, belts or chains around the roller body or the trunnion of the roller and to hang such cables, ropes, belts or chains into the hook of a crane. In many instances, for instance, when removing or installing a roller in the direction of the longitudinal axis of the roller, which is journalled in a calender with a plurality of superimposed rollers, it is necessary so to suspend the roller in the crane that the crane cables can be passed by those rollers which are located above the roller to be removed, which rollers frequently have a greater diameter than the roller to be exchanged. While it is possible by means of a bridge to spread apart the cable, rope or the like looped around the roller body or roller trunnion, it will be appreciated that this requires additional manipulation, and in view of the frequently poor accessibility within the calender system is awkward and time-consuming.

It is, therefore, an object of this invention to provide a hoist for transporting rollers, which hoist is suspended in the crane hook by means of a bar or directly on the crane cable and can easily and in a simple manner be fastened to the roller to be transported.

It is another object of this invention to provide a hoist as just set forth, in which the hoist can be quickly and simply connected to the roller to be transported also when the accessibility to a built-in roller is not very good.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawing, in which:

FIG. 1 shows a front view, and

FIG. 2 shows a top view of a hoist according to the present invention.

FIG. 3 is an enlarged fragmentary view of the structure in FIGS. 1 and 2.

The hoist according to the present invention is characterized primarily in that it comprises at least one lever, one end of which is provided with an eye or fork for receiving a crane cable, crane hook or crane bar, whereas, the other end of said lever is equipped with a bolt which extends perpendicularly with regard to the longitudinal axis of the lever and engages a bore at the end face of the roller beam, the central section of said lever having a pin engaging a groove provided around the circumference of the roller body.

According to a further development of the invention, the lever may have that lever end cranked which is provided with a bolt.

The hoist according to the invention, one end of which is suspended on a crane hook, crane cable or linkage system, thus engages by means of a bolt a corresponding bore in the end face of the roller body and additionally rests through a pin engaging a groove extend ing around the circumference of the roller body.

The suspending of a roller in the hoist according to the invention is preferably effected in such a way that first the bolt on the lever is inserted into the corresponding bore at the end face of the roller body. If the lever at its other end is not already suspended in the crane cable, the crane cable itself or a hook connected to the crane cable or a bar will be connected to the said lever. By starting to move the crane and pulling the crane cable upwardly, the hoist according to the invention is pivoted about the axis of the bolt in the bore at the end face of the roller body until the pin in the central section of the lever engages or latches with the groove extending around the circumference of the roller body. The roller is lifted in response to a further pulling up of the crane cable.

In order to be able to move around handicaps above the roller to be transported, it may be particularly advantageous in one end face each of the roller body to employ two hoists at opposite sides. The length of the lever spaced from the circumference of the roller body and pertaining to the hoists of the present invention is so dimensioned that the crane cables engaging the levers are adapted to be passed by the rollers or other parts above the roller to be transported. In order to avoid an unnecessarily large bending stress acting upon the levers of the hoists according to the invention, the length of said levers will be so dimensioned that the distance between the two crane cables connected to the hoists can be passed by handicaps which are located above the roller to be transported.

Referring now to the drawing in detail, the hoist according to the invention comprises a formed part of the type of lever 1, at one end of which there is provided a fork 2 or an eye for suspending the lever l on a crane cable. If desired, instead of an eye, also a hook or a linkage 3 may be provided. At the other end of lever 1, there is a bolt 4 which is perpendicular to the longitudinal axis of lever l and is insertable into a corresponding bore 5 in the end face 6 of the roller body 7.

A pin 8 is arranged in the central section of lever 1 and is adapted to engage a groove 9 which extends around the circumference of the roller body 7.

The point of attack of lever 1, namely the suspension point for the crane cable 10 at 2, and the points of attack on the roller body are by means of pin 8 and bolt 4 arranged relative to each other in such a way that the connecting lines therebetween define a triangle which in FIG. 1 is designated by dot-dash lines 11. The points of attack may, however, also be located along a line.

By adjustably arranging pin 8 in lever 1, it is possible when transporting a roller to obtain the desired distance between the cables 10 by means of two hoists according to the invention, at each end of the roller.

For evaluation of the teaching of the present invention it is important that therewith a roller is to be provided out of which respectively in the roller frame or calender or glazing roller means respectively are capable of being installed therein or transportable therewith whereby rollers placed over the roller to be installed or taken out of the frame or calender are to be equally strong or stronger. Further, there is to be considered that the middle point of the roll face side is not suitable for securing lifting means respectively a device for grasping the rollers.

There is now proposed a lifting device for such a roller with which four essential points are as follows:

1. Two devices are arranged on the roller in a mirror image to the vertical middle plane and the devices are embodied in a mirror image for each roller face side;

2. Each device forms a frame which provides subsequent parts arranged in triangular form; a stud on one end for insertion in a bore of the face side of the roller located below the horizontal roller middle plane, a connection device with the hanging-up provision and a stud for engagement against a circular shoulder on the face side of the roller located for engagement on this shoulder concentrically to the roller axis or for engagement against the upper surface of the roller.

3. The bores in the face side of the roller for both devices are located symmetrically on both sides of the vertical middle plane and 4. The connection line between the stud engaging against the circular shoulderor against the roller upper surface and the base point of the connection device of the hanging-up means is located in an angle of above 30 to the tangent on the shoulder or the roller upper surface in the engaging point of the stud in the shoulder or of the roller upper surface.

Important hereby is the feature according to the foregoing sub paragraph 4 is to hinder particularly that the device by way of disadvantageous angular engagement effects a wedge binding or self-bending of the stud or pin 8. If the stud or pin 8 engages against the shoulder or against the roller upper surface in a direction diverging only already from the tangent, so the stud or pin 8 clamps tightly in a wedge-manner and there is required a knocking of the device from the roller whereby the high weight of the roller is to be considered.

The present invention relates to a lifting tool for rollers, especially rollers that are removed in axial direction from the roller stand or frame.

For transporting of rollers there can be cables, belts, or chains placed around the roll body or studs which are attached or hung on a crane hook. In many cases, for instance during assembly or disassembly of a roller in direction of the longitudinalaxis of the roller that is journalled in a calender with several rollers arranged one above the other, the hanging or attachment of the roller on the crane must be so undertaken that the crane rope or cable located on the roller to be interchanged can be passed over to larger rollers having a greater diameter at least in part. There may be possible that a belt or cable slung around the roller body or stud could be spread apart by means of a bridge; this however, requires additional manipulation and would be cumbersome and time-consuming because of the frequently bad accessibility within the calender stand or frame.

Mostly with long rollers there is fastening of the cable means, belts or chains on two trolley tracks or rails movable synchronously in the spacing of the roller length and there must be maintained the exact spacing of the trolleys which however saves a long crane vehicle.

The goal of the present invention is to create a lifting tool for transporting of rollers that is suspended on a crane vehicle or two trolley tracks by means of a rod, a crane cable means or chain and that can be quickly, securely and simply secured on the roller to be transported.

For the solution of this goal there is provided a lifting tool which consists of a lever that includes at its end means for fastening a cable or chain of a lifting device and at the other end thereof extending at right angles to the longitudinal axis of the lever having bolts engaging in a bore in the face or end side of the roller and en,- gaging against the roller with the middle section or parts of this section; the same carries or supports an ex-. tension engaging behind an angular shoulder on the roller face or end side, and this extension during swinging of the lever around the bolt moves laterally ofthe shoulder so that the lever can be removed .or withdrawn therefrom in axial direction of the roller. 7 According to a further embodiment of the inventive lifting tool there is noted that the lever can be offsetor cropped on the end provided with the bolt.

The hanging or suspension of a roller on the inventive lifting tool procedes in such a manner that first the bolt on the lever is shifted into the corresponding bore on the end of face side of the roller. When the lever on the other end does not already hang in the crane cable or crane chain, then the cable or chain itself is fastened thereon. By way of lifting or drawing up the cable or the chain there is pivoting or swinging of the inventive listing tool around the axis of the pin or bolt means located in the bore on the end or face side of the roller body until the extension which first is located in the axis groove engages behind the shoulder torn by way of this groove. Hereby the extension either comes into engagement against the groove bottom or pin in the mid die lever section engages against the outer edge of the angular shoulder.

In order to avoid an unnecessarily large bending load i of the lever of the inventive lifting tool there is measurements established as to lengths thereof so that the spacing between both crane cables fastened on the lift-:

ing tool can be guided past relative to the obstacles located by way of the roller to be transported.

FIG. 1 shows a front view of a lifting tool and FIG. 2 shows a plan thereof. FIG. 3 is an enlarged portion of,

the middle section of the lever. The inventive lifting tool consists of the lever 1 having a fork .2 on one end. thereof or also having aneyelet for a hook 3 of a crane cable 10 or adapted to be provided for a rod or linkage means. At the other end of the lever 1 there extends a 7. The lever 1 is offset or cropped and forms an inner edge la.

In the middle section of the lever 1 there is a square disc or rectangular plate 8a held by pin means 8; the disc 8a has a section or portion 8b engagable in a rotating or circulating groove 9 on the periphery of the roller neck or body 7 when the lever l is swung or pivoted into the carrying position thereof (opposite to the arrow F in FIG. 1).

The ring or angular groove 9 has a groove bottom 9a and forms a ring or angular shoulder 9b behind which the segment 8b of the disc is located and thereby an axial releasing of the lift tool from the roller becomes hindered when for instance the two trolleys do not run synchronously on which the cable means or chains en gaging the ends of the roller are secured.

The pins 8 can project with the heads 8c thereof beyond the lever as recognizable in FIG. 2.

During raising of the lifting tool the heads 80 of the pins 8 either engage against the roller neck or body 7 or the inner edge la of the lever engages against the edge of the ring or angular shoulder 9b, whereby simultaneously the disc 8a engages behind the ring or angular shoulder 9b; or however, the disc 8a itself engages against the bottom 9a of the groove 9 and forms there the force applying point or location of the middle lever section.

The force engaging points on the lever l are located upon a triangle which is illustrated by dotted lines in FIG. 1 and designated by reference no. 11. The engaging points can however also be located in a line.

The disc 8a and the pin means 8 can be adjustable on the lever in that the pins are displaced whereby the angular position of the lever is changeable and the spacing between the cables or ropes can be changed at each roller end during transporting of a roller by means of two lifting tools.

The disc or part 8 is much more a plate which engages in a segment thereof with respect to the groove 9 as recognizable in FIGS. 1 and 2. The foregoing description in connection with the drawings make it apparent that during swinging or pivoting of the lever 1 in the direction of the arrow F the disc or plate can move forward laterally up the ring or angular shoulder and the lever is releasable in axial direction of the roller.

In summary, the features of the present invention concern a lifting tool for rollers consisting of a lever which is provided at one end thereof with means for fastening a cable or chain or lifting device and at the other end thereof having a bolt engaging at right right angles to the lever longitudinal axis particularly with respect to a bore in the end or face side of the roller and with the middle segment or parts of this segment being engagable on the roller and checking a ring or angular folder having an extension engaging behind on the roller end or face side; the extension is moved during pivoting or swinging of the lever around the bolt laterally of the shoulders so that the lever can be withdrawn or removed therefrom in axial direction with the roller. The end of the lever 1 provided with the bolt 4 is offset or clamped.

It is, of course, to be understood that the present invention is, by no means, limited to the particular showing in the drawing, but also comprises any modifications within the scope of the appended claims.

What we claim is:

l. A hoisting apparatus for a heavy roller which has an end portion having a radial end face extending to a peripheral shoulder on said end portion and which has a vertical axial plane and a horizontal axial plane, said apparatus comprising a lever having a surface for engagement with the face of said end portion, a projection at one end of said lever perpendicular to said surface and engageable in a recess in the end face of said end portion below said horizontal plane, connection means at the opposite end of said lever for connection to a hoisting device, said lever having an offset portion between said connection means and said surface to overlie said shoulder, and an element on said offset portion spaced from said surface and extending toward said projection to engage behind said peripheral shoulder.

2. A hoisting apparatus as claimed in claim 1, in which said element is adjustably mounted on said lever, so it may be positioned in different positions for engagement with rollers of different sizes.

3. A hoisting apparatus as claimed in claim 1, in which said lever is triangular, and said projection, said connection means and said element are located adjacent the apices of the triangular, respectively.

4. A hoisting apparatus for a heavy roller, each end of which has an end portion having radial end face extending to a peripheral shoulder, said roller having a vertical axial plane and a horizontal axial plane, said hoisting apparatus including a pair of levers at each end of the roller, the levers of each pair being mirror images of each other, each lever having a surface engaging the end face of one end portion, a projection at one end of said lever extending from said surface and engaging a recess in the face of the end portion of said roller below said horizontal plane, a connection means at the opposite end for connection to a hoisting means, each of said levers having an offset portion between said connection means and said surface to overlie said shoulder, and an element on said offset portion spaced from said surface and extending toward said projection to engage behind said peripheral shoulder. 

1. A hoisting apparatus for a heavy roller which has an end portion having a radial end face extending to a peripheral shoulder on said end portion and which has a vertical axial plane and a horizontal axial plane, said apparatus comprising a lever having a surface for engagement with the face of said end portion, a projection at one end of said lever perpendicular to said surface and engageable in a recess in the end face of said end portion below said horizontal plane, connection means at the opposite end of said lever for connection to a hoisting device, said lever having an offset portion between said connection means and said surface to overlie said shoulder, and an element on said offset portion spaced from said surface and extending toward said projection to engage behind said peripheral shoulder.
 2. A hoisting apparatus as claimed in claim 1, in which said element is adjustably mounted on said lever, so it may be positioned in different positions for engagement with rollers of different sizes.
 3. A hoisting apparatus as claimed in claim 1, in which said lever is triangular, and said projection, said connection means and said element are located adjacent the apices of the triangular, respectively.
 4. A hoisting apparatus for a heavy roller, each end of which has an end portion having radial end face extending to a peripheral shoulder, said roller having a vertical axial plane and a horizontal axial plane, said hoisting apparatus including a pair of levers at each end of the roller, the levers of each pair being mirror images of each other, each lever having a surface engaging the end face of one end portion, a projection at one end of said lever extending from said surface and engaging a recess in the face of the end portion of said roller below said horizontal plane, a connection means at the opposite end for connection to a hoisting means, each of said levers having an offset portion between said connection means and said surface to overlie said shoulder, and an element on said offset portion spaced from said surface and extending toward said projection to engage behind said peripheral shoulder. 